# SPDX-License-Identifier: BSD-3-Clause
# Copyright(c) 2010-2020 Intel Corporation

# binary name
APP = lthread_pthread_shim

# all source are stored in SRCS-y
SRCS-y := main.c pthread_shim.c

include ../common/common.mk

CFLAGS += -DALLOW_EXPERIMENTAL_API
CFLAGS += -D_GNU_SOURCE
LDFLAGS += "-Wl,--copy-dt-needed-entries"

# Build using pkg-config variables if possible
ifneq ($(shell pkg-config --exists libdpdk && echo 0),0)
$(error "no installation of DPDK found")
endif

all: shared
.PHONY: shared static
shared: build/$(APP)-shared
	ln -sf $(APP)-shared build/$(APP)
static: build/$(APP)-static
	ln -sf $(APP)-static build/$(APP)

LDFLAGS += -lpthread

PKGCONF ?= pkg-config

PC_FILE := $(shell $(PKGCONF) --path libdpdk 2>/dev/null)
CFLAGS += -O3 $(shell $(PKGCONF) --cflags libdpdk)
LDFLAGS_SHARED = $(shell $(PKGCONF) --libs libdpdk)
LDFLAGS_STATIC = $(shell $(PKGCONF) --static --libs libdpdk)

build/$(APP)-shared: $(SRCS-y) Makefile $(PC_FILE) | build
	$(CC) $(CFLAGS) $(filter %.c,$^) -o $@ $(LDFLAGS) $(LDFLAGS_SHARED)

build/$(APP)-static: $(SRCS-y) Makefile $(PC_FILE) | build
	$(CC) $(CFLAGS) $(filter %.c,$^) -o $@ $(LDFLAGS) $(LDFLAGS_SHARED)

# workaround for a gcc bug with noreturn attribute
# http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12603
ifeq ($(shell gcc -dumpversion),-gt 0)
CFLAGS_main.o += -Wno-return-type
endif

build:
	@mkdir -p $@

.PHONY: clean
clean:
	rm -f build/$(APP) build/$(APP)-static build/$(APP)-shared
	test -d build && rmdir -p build || true
